//
//  CZMainTabBar.swift
//  iOSWeibo10
//
//  Created by 李伟鹏 on 16/5/10.
//  Copyright © 2016年 itcast. All rights reserved.
//

import UIKit

class CZMainTabBar: UITabBar {
    var composeCallBack: (() -> ())?
    override func layoutSubviews() {
        super.layoutSubviews()
        let width = self.frame.width / 5
        var index = 0
        for view in self.subviews {
            if view.isKindOfClass(NSClassFromString("UITabBarButton")!){
                view.frame = CGRect(x: CGFloat(index) * width, y: 0, width: width, height: self.frame.height)
                index++
                if index == 2 {
                    index++
                }
            }
        }
        composeButton.frame = CGRect(x: 2 * width, y: 0, width: width, height: self.frame.height)
    }
    func composeButtonClick(button: UIButton) {
        composeCallBack?()
    }
    lazy var composeButton: UIButton = {
        let button = UIButton(type: UIButtonType.Custom)
    button.setBackgroundImage(UIImage(named: "tabbar_compose_button"), forState: UIControlState.Normal)
    button.setBackgroundImage(UIImage(named: "tabbar_compose_button_highlighted"), forState: UIControlState.Highlighted)
        button.setImage(UIImage(named: "tabbar_compose_icon_add"), forState: UIControlState.Normal)
        button.setImage(UIImage(named: "tabbar_compose_icon_add_highlighted"), forState: UIControlState.Highlighted)
    self.addSubview(button)
    button.addTarget(self, action: "composeButtonClick:", forControlEvents: UIControlEvents.TouchUpInside)
    return button
    }()

}
